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Marcus Noble 2018-02-09 17:14:22 +00:00
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src/posts/2018-02-04-private-variables-in-javascript.md
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@ -12,7 +12,7 @@ In 2015 JavaScript had [classes](https://developer.mozilla.org/en-US/docs/Web/Ja
So how can we go about protecting data that shouldn't change during runtime? Let's take a look at some options. So how can we go about protecting data that shouldn't change during runtime? Let's take a look at some options.
> Throughout this post I will reuse an example class that is used to build a shape. It's width and height can only be set when initialised and provides a property to get the area. > Throughout this post I will reuse an example class that is used to build a shape. Its width and height can only be set when initialised and provides a property to get the area.
> For more information on the `get` keyword used in these examples take a look at my last post on [Getters and Setters](/2018-01-26-getters-and-setters-in-javascript) > For more information on the `get` keyword used in these examples take a look at my last post on [Getters and Setters](/2018-01-26-getters-and-setters-in-javascript)
## Naming convention ## Naming convention
@ -154,7 +154,7 @@ console.log(square.width); // undefined
console.log(square instanceof Shape); // true console.log(square instanceof Shape); // true
``` ```
Alternatively, we can set the instances prototype to have `this` as it's prototype allowing us to use both `instanceof` and `get`. In the example below we have a prototype chain of `Object -> Outer Shape -> Inner Shape Prototype -> Inner Shape`. Alternatively, we can set the instances prototype to have `this` as its prototype allowing us to use both `instanceof` and `get`. In the example below we have a prototype chain of `Object -> Outer Shape -> Inner Shape Prototype -> Inner Shape`.
```js ```js
function Shape() { function Shape() {